At 2100, an older adult client turns on the call light and reports to the practical nurse (PN) concerns of difficulty falling asleep. Which priority action should the PN implement?

A. Recommend using guided imagery to relax: May help, but before suggesting relaxation techniques, it’s important to assess for environmental factors interfering with sleep. B. Reassure the client that it is still early: This dismisses the client’s concern and does not address the cause of insomnia. C. Inspect the room's environmental aspects: First priority is to assess for environmental disturbances (noise, light, temperature) that may affect sleep and can be corrected immediately. D. Shut the client's room door securely: May reduce noise but is a single intervention without a full assessment of environmental causes.